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/scripts/genksyms/Makefile

http://github.com/mirrors/linux
Makefile | 31 lines | 13 code | 8 blank | 10 comment | 0 complexity | 4ae554dc04394ae21443cc2a47f0a8d8 MD5 | raw file
 1# SPDX-License-Identifier: GPL-2.0
 2
 3hostprogs	:= genksyms
 4always-y	:= $(hostprogs)
 5
 6genksyms-objs	:= genksyms.o parse.tab.o lex.lex.o
 7
 8# FIXME: fix the ambiguous grammar in parse.y and delete this hack
 9#
10# Suppress shift/reduce, reduce/reduce conflicts warnings
11# unless W=1 is specified.
12#
13# Just in case, run "$(YACC) --version" without suppressing stderr
14# so that 'bison: not found' will be displayed if it is missing.
15ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
16
17quiet_cmd_bison_no_warn = $(quiet_cmd_bison)
18      cmd_bison_no_warn = $(YACC) --version >/dev/null; \
19			  $(cmd_bison) 2>/dev/null
20
21$(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
22	$(call if_changed,bison_no_warn)
23
24endif
25
26# -I needed for generated C source (shipped source)
27HOSTCFLAGS_parse.tab.o := -I $(srctree)/$(src)
28HOSTCFLAGS_lex.lex.o := -I $(srctree)/$(src)
29
30# dependencies on generated files need to be listed explicitly
31$(obj)/lex.lex.o: $(obj)/parse.tab.h